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Can Time Go Backwards

   2015    Science
We move around in space, but we are stuck in a prison of time moving ever forwards. Einstein said, 'The distinction between past, present and future is only a stubbornly persistent illusion.' Is our experience of the ticking clock merely a trick of the mind? Could science ever make the clock move backwards? Experiments in quantum physics are showing that the future influences the present: what happens later limits the choices we think we have now. The laws of physics say visiting or talking to ourselves in the past is possible – but changing history once we get there is not.
Series: Through the Wormhole Season 6

Race For Rockets

   2005    Technology
Space Race is a docu-drama chronicling the major events and characters in the American/Soviet space race. It focusses on Sergei Korolev, the Soviets' chief rocket designer, and Wernher von Braun, his American counterpart. The series was a joint effort between British, German, American and Russian production teams." In the first episode, 1944-1949, we see Wernher von Braun's work on the V-2 for the Nazis during the last years of the Second World War, his surrender to American troops and his move to the USA. We see Sergei Korolev's release from the Gulag, and how he is set to work on Soviet rockets, first attempting to copy the V-2, then building a more efficient rocket of his own.
Series: Space Race

Nemesis The Sun Evil Twin

   2011    Science
The theory of Némesis, a star that orbits the Sun and causes catastrophic events is explored. Nemesis is a hypothetical red dwarf or brown dwarf, originally postulated in 1984 to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years) somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years.
Series: The Universe

Who Speaks for Earth

   1980    Culture
Sagan reflects on the future of humanity and the question of 'who speaks for Earth?' when meeting extraterrestrials. He discusses the very different meetings of the Tlingit people and explorer Jean-François de La Perouse with the destruction of the Aztecs by Spanish conquistadors, the looming threat of nuclear warfare, and the threats shown by destruction of the Library of Alexandria and the murder of Hypatia. The episode ends with an overview of the beginning of the universe, the evolution of life, and the accomplishments of humanity and makes a plea to mankind to cherish life and continue its journey in the cosmos. The Cosmos Update notes the preliminary reconnaissance of planets with spacecraft, the fall of the Berlin Wall and the end of apartheid in South Africa, and measures towards the reduction of nuclear weapons.
Series: Cosmos

Milk Money

   2018    Nature
Changing diets and dramatic price swings have put dairy farmers on the ropes and fueled a surge in lucrative but controversial raw milk sales. Proponents of raw milk have stated that there are benefits to its consumption, including better flavour, better nutrition, and the building of a healthy immune system. However, the medical community has warned of the dangers, which include a risk of infection, and has not found any clear benefit
Series: Rotten

Did Darwin kill God

   2009    Science
There are some who believe that Darwin's theory of evolution has weakened religion. Conor Cunningham argues that nothing could be further from the truth.He travels to the Middle East where he shows that from the very outset, Christianity warned against literal readings of the biblical story of creation. In Britain, he reveals that, at the time, Darwin's theory of evolution was welcomed by the Anglican and Catholic Churches. Instead, he argues that the conflict between Darwin and God was manufactured by American creationists in the 20th century for reasons that had very little to do with science and religion and a great deal to do with politics and morality. Finally, he comes face to face with some of the most eminent evolutionary biologists, geneticists and philosophers of our time to examine whether the very